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Moller Investment Group -3- September 2, 2010 <br /> Claim No. 6098 <br /> A. Soil Excavation: unknown volume in January 1999. <br /> B. In-Situ Soil/ Groundwater Remediation: soil vapor extraction pilot test <br /> conducted in 1992. <br /> D. Groundwater Trends: MTBE trends are shown below, source area. <br /> Results for S-1 <br /> 10000- <br /> 50001 <br /> 0000 sono{ <br /> ; <br /> L�.•.� METHYL-TERT-BUTYL ETHER(MTBE) BENZENE <br /> VII. COMMENTS AND JUSTIFICATION FOR RECOMMENDED ACTION <br /> A. Site Description: active retail gasoline station <br /> B. Site History: the extent of groundwater contamination is defined <br /> C. Groundwater Monitoring Summary: short monitoring history, nearly all wells <br /> replaced on this site. <br /> D. Remediation Summary: This investigation has been underway for 23 years and <br /> no active remediation has been conducted. <br /> E. Contaminant Exposure Pathway Evaluation: unknown <br /> F. Recommendation: April, 2008, the Fund recommends that the San Joaquin <br /> County LOP direct the Responsible Party to assess remedial technologies and <br /> the potential for hydrocarbons to migrate into nearby buildings. The Fund will <br /> review this site next year to track progress. <br /> UPDATED, September 2010, the Fund recommends that the San Joaquin <br /> County LOP direct the Responsible Party to implement active remediation <br /> without delay to achieve Water Quality Objectives in a timely manner. / <br /> Kirk Carson, P.G. Date Robert Trommer, C.H.G. ate <br /> Technical Review Unit Chief, Technical Review Unit <br /> (916) 341-5663 (916) 341-5684 <br /> California Environmenta/Protection Agency <br /> Q*Recycled Paper <br />